Plumbing contractor (C-36) in Napa, CA
6 licenses · checked Oct 27, 2026
There are 6 Plumbing contractor (C-36) licenses with an address of record in Napa, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.2% of the 2,617 such licenses statewide; Napa ranks #136 of 514 CA cities for this license type. They are spread across 2 ZIP codes; the most common are 94558 (5), 94559 (1). Most list Napa County. By business type: Corporation 3, Sole Owner 3. The median first-issue year is 2018; the oldest license dates from 2016. None has an expiration date in the next 12 months, but status can change at any time (for example after discipline), so re-check before you sign a contract.
What a Plumbing contractor (C-36) license covers
Plumbing (C-36) covers systems that supply safe water and remove liquid and water-borne waste, including water heaters, fixtures, gas piping, drain lines and backflow devices.
How to verify a license
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.
Plumbing contractor (C-36) licenses in Napa
Showing 6 of 6, A to Z. Listing order is alphabetical, not a recommendation.
- A & S Plumbing INC#1043335 · 94558
- Anthony'S Plumbing OF Napa#1014655 · 94558
- O G Plumbing#1034291 · 94558
- ROB Land Plumbing INC#1047290 · 94558
- Rossi Plumbing#1043683 · 94558
- SKN Construction INC#1065772 · 94559
Frequently asked questions
How many Plumbing contractor (C-36) licenses are in Napa?
6 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.2% of CA).
What does a Plumbing contractor (C-36) license cover?
Plumbing (C-36) covers systems that supply safe water and remove liquid and water-borne waste, including water heaters, fixtures, gas piping, drain lines and backflow devices.
How do I verify a Plumbing contractor (C-36) license in Napa?
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Use the license number shown here with the CSLB Instant License Check.
Other license types in Napa
General building contractor (64) · Electrical contractor (C-10) (14) · Painting contractor (C-33) (11) · Landscaping contractor (C-27) (8) · General engineering contractor (6) · HVAC contractor (C-20) (4) · Tile contractor (C-54) (3) · Concrete contractor (C-8) (3)
All Plumbing contractor (C-36) licenses in CA →
Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.